836-P No Clean Flux Pen

https://www.mgchemicals.com/products/soldering-supplies/flux-pens/solder-flux-pen/

836-P is a solder flux pen containing a halogen-free organic flux with low activity. The flux has a low solids content and leaves virtually no residue. Solder joints appear shiny after soldering, even without cleaning. This no clean flux pen is designed for the prototyping, rework and repair of conventional and surface mount circuit boards.

Features & Benefits
Meets IPC J-STD-004B and type ORL0
For both leaded and lead-free solders
Chiseled tip allows precise application
Residues do not require cleaning
Rosin/resin free
Halogen-free
RoHS compliant